Researchers say they have found the first evidence that the frozen outer reaches of our solar system could be littered with many more objects than we think.
Astronomers have been trying to get a picture of the region, known as the Kuiper belt, because it is believed to contain debris from the birth o...

New findings show the planet is more complex and active than previously believed - at least in certain places.
Finding those places, however, turns out to be trickier than just looking at landforms like river valleys or lakebeds or searching for specific minerals.
"Context is everythin...

The 190 - 420 metre wide asteroid 2008 EY5 will make a close pass (34.4-lunar distances, 0.0884-AU), travelling at 12.21-km/second, to the Earth-Moon system on the 5th March, 2010. See more The Lunar Distance (LD), the d...

Asteroid (9) Metis is one of the larger main belt asteroids. It is composed of silicates and metallic nickel-iron, and may be the core remnant of a large asteroid that was destroyed by an ancient collision. Read more

Arsia Mons is the southernmost of the Tharsis volcanoes.
It is 434 km in diameter, almost 19 km high, and the summit caldera is 115 miles wide. For comparison, the largest volcano on Earth is Mauna Loa. From its base on the sea floor, Mauna Loa measures only 10 km high and 120 km in dia...

Title: Evidence for dust accumulation just outside the orbit of Venus Authors: Ch. Leinert, B. Moster To contribute to the knowledge of dynamics of interplanetary dust we are searching for structures in the spatial distribution of interplanetary dust near the orbit of Venus. To this end we study t...

The 610 - 1400 metre wide asteroid (175706) 1996 FG3 will make a close pass (60.7 Lunar Distances, 0.1561 AU), travelling at 6.58 km/s, to the Earth-Moon system on the 6th May, 2009. See more The Lunar Distance (LD), the distanc...

Comet 2P Encke was first discovered on the 17th January, 1786, by Pierre Méchain (Paris, France). The comet has one of the shortest periods (3.3 years) of any known comet. The comet will make a close pass (0.48 AU) of the Earth on the 17th October 2013. The Taurid meteor showers are associated with the c...

Two British astronomers, Paul Cresswell and Richard Nelson, will present new computer simulations of how planetary systems form.
They find that, in the early stages of planetary formation, giant protoplanets migrate inward, locked into mutual orbital resonances, towards the central star....

Title: Jupiter - friend or foe? I: the asteroids Authors: J. Horner, B. W. Jones (The Open University, UK) The asteroids are the major source of potential impactors on the Earth today. It has long been assumed that the giant planet Jupiter acts as a shield, significantly lowering the impact rate on th...

Title: Speed limit on Neptune migration imposed by Saturn tilting Authors: Gwenaël Boué, Jacques Laskar, Petr Kuchynka In this Letter, we give new constraints on planet migration. They were obtained under the assumption that Saturn's current obliquity is due to a capture in resonance with Neptu...

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